build-sys: add meson submodule
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/configure b/configure
index 958a0a4..a2c1159 100755
--- a/configure
+++ b/configure
@@ -223,6 +223,25 @@
return 1
}
+version_ge () {
+ local_ver1=`echo $1 | tr . ' '`
+ local_ver2=`echo $2 | tr . ' '`
+ while true; do
+ set x $local_ver1
+ local_first=${2-0}
+ # shift 2 does nothing if there are less than 2 arguments
+ shift; shift
+ local_ver1=$*
+ set x $local_ver2
+ # the second argument finished, the first must be greater or equal
+ test $# = 1 && return 0
+ test $local_first -lt $2 && return 1
+ test $local_first -gt $2 && return 0
+ shift; shift
+ local_ver2=$*
+ done
+}
+
have_backend () {
echo "$trace_backends" | grep "$1" >/dev/null
}
@@ -963,6 +982,7 @@
# python 2.x, but some distros have it as python 3.x, so
# we check that too
python=
+explicit_python=no
for binary in "${PYTHON-python3}" python
do
if has "$binary"
@@ -1046,7 +1066,7 @@
;;
--install=*) install="$optarg"
;;
- --python=*) python="$optarg"
+ --python=*) python="$optarg" ; explicit_python=yes
;;
--sphinx-build=*) sphinx_build="$optarg"
;;
@@ -2027,15 +2047,52 @@
# Suppress writing compiled files
python="$python -B"
-if ! has "$meson"
-then
- error_exit "Meson not found. Use --meson=/path/to/meson"
+if test -z "$meson"; then
+ if test "$explicit_python" = no && has meson && version_ge "$(meson --version)" 0.55.0; then
+ meson=meson
+ elif test -e "${source_path}/.git" && test $git_update = 'yes' ; then
+ meson=git
+ elif test -e "${source_path}/meson/meson.py" ; then
+ meson=internal
+ else
+ if test "$explicit_python" = yes; then
+ error_exit "--python requires using QEMU's embedded Meson distribution, but it was not found."
+ else
+ error_exit "Meson not found. Use --meson=/path/to/meson"
+ fi
+ fi
+else
+ # Meson uses its own Python interpreter to invoke other Python scripts,
+ # but the user wants to use the one they specified with --python.
+ #
+ # We do not want to override the distro Python interpreter (and sometimes
+ # cannot: for example in Homebrew /usr/bin/meson is a bash script), so
+ # just require --meson=git|internal together with --python.
+ if test "$explicit_python" = yes; then
+ case "$meson" in
+ git | internal) ;;
+ *) error_exit "--python requires using QEMU's embedded Meson distribution." ;;
+ esac
+ fi
fi
-meson=$(command -v $meson)
-if ! $python -c 'import pkg_resources' > /dev/null 2>&1; then
- error_exit "Python setuptools not found"
+if test "$meson" = git; then
+ git_submodules="${git_submodules} meson"
fi
+if test "$git_update" = yes; then
+ (cd "${source_path}" && GIT="$git" "./scripts/git-submodule.sh" update "$git_submodules")
+fi
+
+case "$meson" in
+ git | internal)
+ if ! $python -c 'import pkg_resources' > /dev/null 2>&1; then
+ error_exit "Python setuptools not found"
+ fi
+ meson="$python ${source_path}/meson/meson.py"
+ ;;
+ *) meson=$(command -v meson) ;;
+esac
+
# Check that the C compiler works. Doing this here before testing
# the host CPU ensures that we had a valid CC to autodetect the
